Credit Facilities (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Outstanding Amount of Credit Facilities

Amounts outstanding under the Company’s credit facilities, net of debt issuance cost, consist of the following:

	December 31,
	2018			2017
Unsecured Revolving Credit Facility, $1,500,000, LIBOR plus 1.375% variable, due October 30, 2022	$	604,383		$	590,000
Unsecured Term Loan A, $1,100,000, LIBOR plus 1.375% variable, due October 30, 2022	1,045,000			1,100,000
Unsecured term notes:
July 29, 2016, Series G Senior Unsecured Notes, $50,000, 2.64% fixed, due July 29, 2021	50,000			50,000
December 2, 2013, Series F Senior Unsecured Notes, $250,000, 3.24% fixed, due December 2, 2023	250,000			250,000
October 30, 2017, Series J Senior Unsecured Notes, €225,000, 1.40% fixed, due October 30, 2024	257,468			269,955
November 30, 2016, Series H Senior Unsecured Notes, $250,000, 3.24% fixed, due November 30, 2026	250,000			250,000
October 30, 2017, Series K Senior Unsecured Notes, €250,000, 1.81% fixed, due October 30, 2027	286,075			299,950
October 30, 2017, Series I Senior Unsecured Notes, $120,000, 3.70% fixed, due October 30, 2027	120,000			120,000
October 30, 2017, Series L Senior Unsecured Notes, €125,000, 2.02% fixed, due October 30, 2029	143,038			149,975
October 30, 2017, Series M Senior Unsecured Notes, €100,000, 2.32% fixed, due October 30, 2032	114,430			119,980
Other unsecured debt	27,093			49,990
Total unsecured debt	3,147,487			3,249,850
Unamortized debt issuance costs	(4,207		)	(4,841		)
Total debt	3,143,280			3,245,009
Less debt due within one year	711,147			694,989
Long-term debt, excluding current portion	$	2,432,133		$	2,550,020

Schedule of Maturities of Long-term Debt

Approximate maturities under the Company’s credit facilities, net of debt issuance costs, are as follows:

2019	$	711,147
2020	111,562
2021	186,866
2022	714,366
2023	249,654
Thereafter	1,169,685
	$	3,143,280